The Spacer,sleeve, cataloged under National Stock Number 5365-01-576-4909, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-576-4909 |
| Primary Part Number | 6444009-01M1 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6444009-01M1 | Amz Alabama Inc. (USA) |
| 6444009-01M1 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 6444009-01M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
| 6444009-01M1 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems Land & Armaments L.p. |
NSN 5365-01-576-4909 is a Spacer,sleeve, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-576-4909 has 2 manufacturer part numbers on file: 6444009-01M1 (Amz Alabama Inc.), 6444009-01M1 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6444009-01M1: Part Name Assigned by Controlling Agency: SHAFT; End Item Identification: 9515-01-563-0360;KIT,ARMOR,MEDIUM CRAWLER TRACTOR. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.